The solar system is our cosmic neighborhood, made up of the sun and everything ... Neptune and then the possible Planet Nine. It's a dynamic system shaped by gravity and time, and while we've ...

Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, ...

The solar system consists of our star, the sun, and everything bound to it by gravity: the planets Mercury, Venus, Earth, ...

A 9th planet in our solar system might be found — and no, it’s not Pluto - Is there another planet out there? Researchers say ...

Scientists think they’ve detected a new planet beyond Neptune. Find out why experts believe 'Planet X' might support alien ...

Here’s a little spoiler for next month’s Cosmic Calendar: early May will see the return of the Eta Aquarid meteor shower. The ...

The Solar System is very tidy ... produces a little increase in light as the gravity of the planet magnifies the star behind.

Astronomers may have found a candidate for Planet Nine. This planet is beyond Neptune. The finding could be the first ...

Pluto was discovered in 1930 in Arizona, but in 2006 scientists decided to cut Pluto from the planetary line up. Here is why ...